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(with comments on Brazilian markets)
B
Trust
https://www.youtube.com/watch?v=UP1YsMlrfF0
Trust
What if I use the biggest, most well funded player in
the world?
SMS & 2FA
https://www.youtube.com/watch?time_continue=175&amp=&v=mLh1Nmqa6OM
SMS & 2FA
 Well known in Brazilian Bitcoin Community.
 Above-Market returns promised.
 Gone with 500 BTCs in @2017.
Brazil is dif...
Brazil is different?
Brazil is different?
Brazil is different?
Brazil is different?
Coercion
Coercion
Paranoid?
 Purchase balanced dice. & test them.
 You will roll them at least 99 times to generate a private key.
 Look for B6 dic...
 Trezor
 Ledger
 Open Dime
Dedicated Hardware
Cold Storage
Cold Storage
 Multi Signature.
 Timelock.
Paranoid?
Paranoid?
 WHERE IS IT?
Mainstream?
Mainstream?
… & more:
 Governance challenges everywhere;
 Smart Contracts;
 Incredible array of options (most worthless or soon-to-be
worthle...
Working with the community
Final Remarks
 Security can’t be bolted on afterwards;
 Security is expensive;
 Security is inconvenient;
 Security is...
Q & A
igorhvr@walltime.info
https://www.linkedin.com/in/igorhvr/
https://walltime.info/intro.html
Thanks,
!
Igor Hjelmstrom Ribeiro -  Bitcoin: desafios de segurança frente à ataques de origem global.
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Palestra DevCamp 2018 - Igor Hjelmstrom Ribeiro: Bitcoin: desafios de segurança frente à ataques de origem global.

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Igor Hjelmstrom Ribeiro - Bitcoin: desafios de segurança frente à ataques de origem global.

  1. 1. (with comments on Brazilian markets)
  2. 2. B
  3. 3. Trust https://www.youtube.com/watch?v=UP1YsMlrfF0
  4. 4. Trust
  5. 5. What if I use the biggest, most well funded player in the world?
  6. 6. SMS & 2FA https://www.youtube.com/watch?time_continue=175&amp=&v=mLh1Nmqa6OM
  7. 7. SMS & 2FA
  8. 8.  Well known in Brazilian Bitcoin Community.  Above-Market returns promised.  Gone with 500 BTCs in @2017. Brazil is different?
  9. 9. Brazil is different?
  10. 10. Brazil is different?
  11. 11. Brazil is different?
  12. 12. Brazil is different?
  13. 13. Coercion
  14. 14. Coercion
  15. 15. Paranoid?
  16. 16.  Purchase balanced dice. & test them.  You will roll them at least 99 times to generate a private key.  Look for B6 dice Bitcoin for some references.  Find a secure computer.  Remove networking capability (wifi & wired).  Boot it with an ephemeral operating system.  Generate your private key from dice rolls xor’ed with regular randomness sources.  Burn down the computer (just to be sure).  Store using BIP38 in as safe location.  Use a hard-to-guess password and never write it down ○ Anywhere (make sure you don’t forget it either!) Paranoid? (only half-joking!)
  17. 17.  Trezor  Ledger  Open Dime Dedicated Hardware
  18. 18. Cold Storage
  19. 19. Cold Storage
  20. 20.  Multi Signature.  Timelock. Paranoid?
  21. 21. Paranoid?  WHERE IS IT?
  22. 22. Mainstream?
  23. 23. Mainstream?
  24. 24. … & more:
  25. 25.  Governance challenges everywhere;  Smart Contracts;  Incredible array of options (most worthless or soon-to-be worthless). Going forward – increasingly complex Environment
  26. 26. Working with the community
  27. 27. Final Remarks  Security can’t be bolted on afterwards;  Security is expensive;  Security is inconvenient;  Security is not absolute;  Please think about this – find the right security vs convenience trade-offs for you and make sure you take measures to achieve appropriate protection.
  28. 28. Q & A igorhvr@walltime.info https://www.linkedin.com/in/igorhvr/ https://walltime.info/intro.html Thanks, !

Palestra DevCamp 2018 - Igor Hjelmstrom Ribeiro: Bitcoin: desafios de segurança frente à ataques de origem global.

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